WO2007122573A3 - Éléments optiques à phase géométrique de cristaux liquides et système pour produire et commuter rapidement des modes hélicoïdaux d'une onde électromagnétique sur la base des éléments optiques - Google Patents

Éléments optiques à phase géométrique de cristaux liquides et système pour produire et commuter rapidement des modes hélicoïdaux d'une onde électromagnétique sur la base des éléments optiques Download PDF

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Publication number
WO2007122573A3
WO2007122573A3 PCT/IB2007/051441 IB2007051441W WO2007122573A3 WO 2007122573 A3 WO2007122573 A3 WO 2007122573A3 IB 2007051441 W IB2007051441 W IB 2007051441W WO 2007122573 A3 WO2007122573 A3 WO 2007122573A3
Authority
WO
WIPO (PCT)
Prior art keywords
optical elements
radiation beam
geometrical phase
liquid crystal
propagation
Prior art date
Application number
PCT/IB2007/051441
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English (en)
Other versions
WO2007122573A2 (fr
Inventor
Lorenzo Marrucci
Original Assignee
Consiglio Nazionale Ricerche
Lorenzo Marrucci
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Consiglio Nazionale Ricerche, Lorenzo Marrucci filed Critical Consiglio Nazionale Ricerche
Priority to EP07735574A priority Critical patent/EP2013647A2/fr
Publication of WO2007122573A2 publication Critical patent/WO2007122573A2/fr
Publication of WO2007122573A3 publication Critical patent/WO2007122573A3/fr
Priority to US12/259,256 priority patent/US8264623B2/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/0305—Constructional arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/0305—Constructional arrangements
    • G02F1/0322—Arrangements comprising two or more independently controlled crystals
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/18—Function characteristic adaptive optics, e.g. wavefront correction

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Document Processing Apparatus (AREA)

Abstract

L'invention concerne des éléments optiques à phase géométrique qui comprennent, comme moyens biréfringents, une matière de cristaux liquides présentant une orientation spatialement non homogène du directeur moléculaire, dans le plan orthogonal à la direction de propagation d'un faisceau de rayonnement d'entrée, ordonné selon un motif géométrique prédéterminé. L'invention concerne aussi un système optique pour produire des modes hélicoïdaux de propagation d'un faisceau de rayonnement optique, qui comprend un élément optique à phase géométrique orienté transversalement à la direction de propagation du faisceau, dont l'axe optique est orienté selon une relation géométrique prédéterminée permettant de transformer un faisceau de rayonnement d'entrée polarisé circulaire en mode hélicoïdal à l'aide d'un front d'onde dont le sens de rotation de la surface hélicoïdale est fonction du sens de rotation de la polarisation d'entrée; la commutation entre les différents ordres d'hélicité du faisceau de rayonnement émergeant de l'élément optique à phase géométrique est mise en oeuvre par la commutation de l'état de polarisation circulaire du rayonnement d'entrée.
PCT/IB2007/051441 2006-04-26 2007-04-20 Éléments optiques à phase géométrique de cristaux liquides et système pour produire et commuter rapidement des modes hélicoïdaux d'une onde électromagnétique sur la base des éléments optiques WO2007122573A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07735574A EP2013647A2 (fr) 2006-04-26 2007-04-20 Elements optiques a phase geometrique de cristaux liquides et systeme pour produire et commuter rapidement des modes helicoidaux d'une onde electromagnetique sur la base des elements optiques
US12/259,256 US8264623B2 (en) 2006-04-26 2008-10-27 Liquid crystal geometrical phase optical elements and a system for generating and rapidly switching helical modes of an electromagnetic wave, based on these optical elements

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000303A ITTO20060303A1 (it) 2006-04-26 2006-04-26 Lettera di incarico segue
ITTO2006A000303 2006-04-26

Publications (2)

Publication Number Publication Date
WO2007122573A2 WO2007122573A2 (fr) 2007-11-01
WO2007122573A3 true WO2007122573A3 (fr) 2008-06-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/051441 WO2007122573A2 (fr) 2006-04-26 2007-04-20 Éléments optiques à phase géométrique de cristaux liquides et système pour produire et commuter rapidement des modes hélicoïdaux d'une onde électromagnétique sur la base des éléments optiques

Country Status (4)

Country Link
US (1) US8264623B2 (fr)
EP (1) EP2013647A2 (fr)
IT (1) ITTO20060303A1 (fr)
WO (1) WO2007122573A2 (fr)

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Also Published As

Publication number Publication date
WO2007122573A2 (fr) 2007-11-01
EP2013647A2 (fr) 2009-01-14
US20090141216A1 (en) 2009-06-04
US8264623B2 (en) 2012-09-11
ITTO20060303A1 (it) 2007-10-27

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